Examples: shallow tweaks to match upcoming other examples.

examples/opengl3_example/imgui_impl_glfw_gl3.cpp

@@ -14,13 +14,12 @@
 #include <GLFW/glfw3native.h>
 #endif
 
+// Data
 static GLFWwindow*  g_Window = NULL;
+static double       g_Time = 0.0f;
 static bool         g_MousePressed[3] = { false, false, false };
 static float        g_MouseWheel = 0.0f;
-static double       g_Time = 0.0f;
 static bool         g_FontTextureLoaded = false;
-
-// Handles for OpenGL3 rendering
 static int          g_ShaderHandle = 0, g_VertHandle = 0, g_FragHandle = 0;
 static int          g_AttribLocationTex = 0, g_AttribLocationProjMtx = 0;
 static int          g_AttribLocationPosition = 0, g_AttribLocationUV = 0, g_AttribLocationColor = 0;
@@ -146,7 +145,7 @@ void ImGui_ImplGlfwGL3_CharCallback(GLFWwindow* window, unsigned int c)
         io.AddInputCharacter((unsigned short)c);
 }
 
-void ImGui_ImplGlfwGL3_LoadFontsTexture()
+void ImGui_ImplGlfwGL3_InitFontsTexture()
 {
     ImGuiIO& io = ImGui::GetIO();
 
@@ -293,8 +292,7 @@ void ImGui_ImplGlfwGL3_Shutdown()
     glDeleteProgram(g_ShaderHandle);
     g_ShaderHandle = 0;
 
-    GLuint tex_id = (GLuint)ImGui::GetIO().Fonts->TexID;
+    if (GLuint tex_id = (GLuint)ImGui::GetIO().Fonts->TexID)
-    if (tex_id)
     {
         glDeleteTextures(1, &tex_id);
         ImGui::GetIO().Fonts->TexID = 0;
@@ -305,7 +303,7 @@ void ImGui_ImplGlfwGL3_Shutdown()
 void ImGui_ImplGlfwGL3_NewFrame()
 {
     if (!g_FontTextureLoaded)
-        ImGui_ImplGlfwGL3_LoadFontsTexture();
+        ImGui_ImplGlfwGL3_InitFontsTexture();
 
     ImGuiIO& io = ImGui::GetIO();
 

examples/opengl3_example/imgui_impl_glfw_gl3.h

@@ -4,8 +4,8 @@
 struct GLFWwindow;
 
 bool        ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks);
+void        ImGui_ImplGlfwGL3_InitFontsTexture();
 void        ImGui_ImplGlfwGL3_Shutdown();
-void        ImGui_ImplGlfwGL3_LoadFontsTexture();
 void        ImGui_ImplGlfwGL3_NewFrame();
 
 // GLFW callbacks (installed by default if you enable 'install_callbacks' during initialization)

examples/opengl3_example/main.cpp

@@ -13,31 +13,32 @@ static void error_callback(int error, const char* description)
 
 int main(int argc, char** argv)
 {
+    // Setup window
     glfwSetErrorCallback(error_callback);
     if (!glfwInit())
         exit(1);
-
     glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
     glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-
     GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui OpenGL3 example", NULL, NULL);
     glfwMakeContextCurrent(window);
     gl3wInit();
 
+    // Setup ImGui binding
+    ImGui_ImplGlfwGL3_Init(window, true);
     //ImGuiIO& io = ImGui::GetIO();
     //ImFont* my_font1 = io.Fonts->AddFontDefault();
     //ImFont* my_font2 = io.Fonts->AddFontFromFileTTF("extra_fonts/Karla-Regular.ttf", 15.0f);
     //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
     //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
     //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
-    ImGui_ImplGlfwGL3_Init(window, true);
+    ImGui_ImplGlfwGL3_InitFontsTexture();
-    ImGui_ImplGlfwGL3_LoadFontsTexture();
 
     bool show_test_window = true;
     bool show_another_window = false;
     ImVec4 clear_color = ImColor(114, 144, 154);
 
+    // Main loop
     while (!glfwWindowShouldClose(window))
     {
         ImGuiIO& io = ImGui::GetIO();

examples/opengl_example/imgui_impl_glfw.cpp

@@ -13,10 +13,11 @@
 #include <GLFW/glfw3native.h>
 #endif
 
+// Data
 static GLFWwindow*  g_Window = NULL;
+static double       g_Time = 0.0f;
 static bool         g_MousePressed[3] = { false, false, false };
 static float        g_MouseWheel = 0.0f;
-static double       g_Time = 0.0f;
 static bool         g_FontTextureLoaded = false;
 
 // This is the main rendering function that you have to implement and provide to ImGui (via setting up 'RenderDrawListsFn' in the ImGuiIO structure)
@@ -124,7 +125,7 @@ void ImGui_ImplGlfw_CharCallback(GLFWwindow* window, unsigned int c)
         io.AddInputCharacter((unsigned short)c);
 }
 
-void ImGui_ImplGlfw_LoadFontsTexture()
+void ImGui_ImplGlfw_InitFontsTexture()
 {
     ImGuiIO& io = ImGui::GetIO();
 
@@ -188,8 +189,7 @@ bool    ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks)
 
 void ImGui_ImplGlfw_Shutdown()
 {
-    GLuint tex_id = (GLuint)ImGui::GetIO().Fonts->TexID;
+    if (GLuint tex_id = (GLuint)ImGui::GetIO().Fonts->TexID)
-    if (tex_id)
     {
         glDeleteTextures(1, &tex_id);
         ImGui::GetIO().Fonts->TexID = 0;
@@ -200,7 +200,7 @@ void ImGui_ImplGlfw_Shutdown()
 void ImGui_ImplGlfw_NewFrame()
 {
     if (!g_FontTextureLoaded)
-        ImGui_ImplGlfw_LoadFontsTexture();
+        ImGui_ImplGlfw_InitFontsTexture();
 
     ImGuiIO& io = ImGui::GetIO();
 

examples/opengl_example/imgui_impl_glfw.h

@@ -4,8 +4,8 @@
 struct GLFWwindow;
 
 bool        ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks);
+void        ImGui_ImplGlfw_InitFontsTexture();
 void        ImGui_ImplGlfw_Shutdown();
-void        ImGui_ImplGlfw_LoadFontsTexture();
 void        ImGui_ImplGlfw_NewFrame();
 
 // GLFW callbacks (installed by default if you enable 'install_callbacks' during initialization)

examples/opengl_example/main.cpp

@@ -12,13 +12,14 @@ static void error_callback(int error, const char* description)
 
 int main(int argc, char** argv)
 {
+    // Setup window
     glfwSetErrorCallback(error_callback);
     if (!glfwInit())
         exit(1);
-
     GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui OpenGL2 example", NULL, NULL);
     glfwMakeContextCurrent(window);
 
+    // Setup ImGui binding
     ImGui_ImplGlfw_Init(window, true);
     //ImGuiIO& io = ImGui::GetIO();
     //ImFont* my_font1 = io.Fonts->AddFontDefault();
@@ -26,12 +27,13 @@ int main(int argc, char** argv)
     //ImFont* my_font3 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyClean.ttf", 13.0f); my_font3->DisplayOffset.y += 1;
     //ImFont* my_font4 = io.Fonts->AddFontFromFileTTF("extra_fonts/ProggyTiny.ttf", 10.0f); my_font4->DisplayOffset.y += 1;
     //ImFont* my_font5 = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, io.Fonts->GetGlyphRangesJapanese());
-    ImGui_ImplGlfw_LoadFontsTexture();
+    ImGui_ImplGlfw_InitFontsTexture();
 
     bool show_test_window = true;
     bool show_another_window = false;
     ImVec4 clear_color = ImColor(114, 144, 154);
 
+    // Main loop
     while (!glfwWindowShouldClose(window))
     {
         glfwPollEvents();